Lead free glaze for alumina bodies

Details Lead free glaze for alumina bodies Lead free glaze for alumina bodies

H - Electricity

01

T

261/16

H01T 13/38 (2006.01) C03C 8/04 (2006.01)

Patent

CA 1132143

ABSTRACT OF THE DISCLOSURE A high-silica ceramic glaze, having a low coefficient of thermal expansion, suitable for application to alumina bodies, is disclosed. The glaze consists essentially, by weight percent, of 35 to 54 percent SiO2, from 7 to 11 percent A1203, from 17 to 25 percent B203, from 2 to 3 percent CaO, from 2 to 2 1/2 percent ZnO, from 4 1/4 to 5 percent Na20, from 8 1/2 to 21 percent SrO, and from 0.7 to 1 percent of a mixture of K20, Li20 and MgO, and minor impurities.

365864

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